我刚刚开始学习MVC 4 ASP.NET。我正在使用一个名为MVC音乐商店的教程作为起点。我有一个名为'Orders'的数据库表,其中包含许多记录。我决定尝试在表格中显示所有订单。这是订单模型:
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Web.Mvc;
namespace MvcMusicStore.Models
{
[Bind(Exclude = "OrderId")]
public partial class Order
{
[ScaffoldColumn(false)]
public int OrderId { get; set; }
[ScaffoldColumn(false)]
public System.DateTime OrderDate { get; set; }
[ScaffoldColumn(false)]
public string Username { get; set; }
[Required(ErrorMessage = "First Name is required")]
[DisplayName("First Name")]
[StringLength(160)]
public string FirstName { get; set; }
[Required(ErrorMessage = "Last Name is required")]
[DisplayName("Last Name")]
[StringLength(160)]
public string LastName { get; set; }
[Required(ErrorMessage = "Address is required")]
[StringLength(70)]
public string Address { get; set; }
[Required(ErrorMessage = "City is required")]
[StringLength(40)]
public string City { get; set; }
[Required(ErrorMessage = "State is required")]
[StringLength(40)]
public string State { get; set; }
[Required(ErrorMessage = "Postal Code is required")]
[DisplayName("Postal Code")]
[StringLength(10)]
public string PostalCode { get; set; }
[Required(ErrorMessage = "Country is required")]
[StringLength(40)]
public string Country { get; set; }
[Required(ErrorMessage = "Phone is required")]
[StringLength(24)]
public string Phone { get; set; }
[Required(ErrorMessage = "Email Address is required")]
[DisplayName("Email Address")]
[RegularExpression(@"[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}",
ErrorMessage = "Email is is not valid.")]
[DataType(DataType.EmailAddress)]
public string Email { get; set; }
[ScaffoldColumn(false)]
public decimal Total { get; set; }
public List<OrderDetail> OrderDetails { get; set; }
}
}
我可以使用剃刀视图显示数据库结果,但它会在一个非常长的表中的一个页面上显示每个视图。
我的问题是,有没有办法让它只显示20个订单,然后我可以点击下一页查看下一个20?只是让你知道整个过程是如何工作的,我只是使用实体框架做“代码优先”(微软似乎在大多数教程中鼓励这种方法):
using System.Data.Entity;
namespace MvcMusicStore.Models
{
public class MusicStoreEntities : DbContext
{
public DbSet<Order> Orders { get; set; }
public DbSet<OrderDetail> OrderDetails { get; set; }
}
}
控制器:
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.Entity;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using MvcMusicStore.Models;
namespace Test.Controllers
{
public class OrdersController : Controller
{
private MusicStoreEntities db = new MusicStoreEntities();
//
// GET: /Orders/
public ActionResult Index()
{
return View(db.Orders.ToList());
}
}
}
这是剃须刀的观点:
@model IEnumerable<MvcMusicStore.Models.Order>
@{
ViewBag.Title = "Index";
}
<h2>Orders Overview</h2>
<br />
<div class="CSSTableGenerator" >
<table>
<tr>
<td>
@Html.DisplayNameFor(model => model.OrderId)
</td>
<td>
@Html.DisplayNameFor(model => model.OrderDate)
</td>
<td>
@Html.DisplayNameFor(model => model.Username)
</td>
<td>
@Html.DisplayNameFor(model => model.Total)
</td>
<td>
@Html.DisplayNameFor(model => model.FirstName)
</td>
<td>
@Html.DisplayNameFor(model => model.LastName)
</td>
<td>
@Html.DisplayNameFor(model => model.Address)
</td>
<td>
@Html.DisplayNameFor(model => model.City)
</td>
<td>
@Html.DisplayNameFor(model => model.State)
</td>
<td>
@Html.DisplayNameFor(model => model.PostalCode)
</td>
<td>
@Html.DisplayNameFor(model => model.Country)
</td>
<td>
@Html.DisplayNameFor(model => model.Phone)
</td>
<td>
@Html.DisplayNameFor(model => model.Email)
</td>
</tr>
@foreach (var item in Model) {
<tr>
<td>
@Html.DisplayFor(modelItem => item.OrderId)
</td>
<td>
@Html.DisplayFor(modelItem => item.OrderDate)
</td>
<td>
@Html.DisplayFor(modelItem => item.Username)
</td>
<td>
@Html.DisplayFor(modelItem => item.Total)
</td>
<td>
@Html.DisplayFor(modelItem => item.FirstName)
</td>
<td>
@Html.DisplayFor(modelItem => item.LastName)
</td>
<td>
@Html.DisplayFor(modelItem => item.Address)
</td>
<td>
@Html.DisplayFor(modelItem => item.City)
</td>
<td>
@Html.DisplayFor(modelItem => item.State)
</td>
<td>
@Html.DisplayFor(modelItem => item.PostalCode)
</td>
<td>
@Html.DisplayFor(modelItem => item.Country)
</td>
<td>
@Html.DisplayFor(modelItem => item.Phone)
</td>
<td>
@Html.DisplayFor(modelItem => item.Email)
</td>
<td>
@Html.ActionLink("Details", "Details", new { id=item.OrderId }) |
@Html.ActionLink("Delete", "Delete", new { id=item.OrderId })
</td>
</tr>
}
</table>
</div>
第二个问题是,表中每个订单的总价格始终为0.0。但是所有其他字段都是正确的。谢谢你的提示。
答案 0 :(得分:1)
关于你的第一个问题......分页是你想要完成的,并且有很多关于如何实现这一点的好指南。就个人而言,我建议学习使用Linq / Entity Framework / MVC Framework,因为一旦你知道那些更好的Pagination位应该很容易添加。
关于你的第二个问题......
您可以使用服务器资源管理器检查数据库的内容,这是我开始验证Total实际存在的位置!
要使其正常工作,您可能必须使用添加连接实用程序(如果尚未设置),该实用程序直接位于图像“数据”中“t”的上方。